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— 17 —

Rear Cover

Nine screws
(BVTP 4x16)

Push the claw of the bracket
in the direction of the arrow
and remove.

— 18 —

Don't damage the surface of anode-cap with sharp shaped material !
Don't press the rubber hardly not to hurt inside of anode-caps !
A metal fitting called as shatter-hook terminal is built into the rubber.
Don’t turn the foot of rubber over hardly !
The shatter-hook terminal will stick out or damage the rubber

.

b

b

a

Turn up one side of the rubber cap in
the direction indicated by the arrow  a

1

2    Using a thumb pull up the rubber cap

firmly in the direction indicated by the
arrow  b

3

When one side of the rubber cap is
separated from the anode button, the
anode-cap can be removed by turning
up the rubber cap and pulling it up in
the direction of the arrow   c

Short circuit the anode of the picture tube and the anode cap to the metal chassis, CRT shield or

carbon paint on the CRT, after removing the anode.

Push the claw of the bracket
in the direction of the arrow
and remove.

Cushion

 

 Anode cap

 

 Speaker

Speaker

 

 Chassis

Two Screws

 

Spring tension

 

C board

 

 Degaussing coil

Deflection
Yoke

 

 Holder DGC

 

 Neck Assy

Two Screws

 

Picture tube

Four tapping screws (M)

— 19 —

In the event of servicing being required to the solder side of the D Board printed
circuit, the bottom plates fitted to the main chassis bracket require to be removed.
This is performed by cutting the gates with a sharp wire cutter at the locations
shown and indicated by arrows.

Note : There are 5 plates fitted to the main bracket and secured by 4 or 6 gates.

Only remove the necessary plate to gain access to the circuit board.

FOR SAFETY REASON THIS

PLATE MUST BE REMOUNTED

AFTER CUTTING AND 

TAKING AWAY.

Because the plates differ in size it is important that the correct plates are refitted in their
original location.
The plates are identified by markings A-B-C-D-E on their top side.

1.

Identify the plate by locating its marking.

2.

Turn the plate over noting where the marking is located.

3.

Locate the corresponding marking indicated on the main chassis bracket. See Fig 2.

4.

Refit the plate as indicated in Fig 3 with the markings located next to each other.

FOR SAFETY REASON THIS

PLATE MUST BE REMOUNTED

AFTER CUTTING AND 

TAKING AWAY.

ATTENTION

FOR SAFETY REASON THIS

PLATE MUST BE REMOUNTED

AFTER CUTTING AND 

TAKING AWAY.

ATTENTION

E

D

INDEX MARKING

AT BRACKET FRAME

In the event of the plates requiring to be
removed at a later stage, this can be achieved
by inserting a screwdriver in the snap-recess
indicated as in Fig 4 and lifting out.

INSERT FROM
THE BOTTOM
SIDE

MAIN BRACKET

— 20 —

•

When complete readjustment is necessary or a new picture
tube is installed, carry out the following adjustments.

•

Unless there are specific instructions to the contrary, carry
out these adjustment with the rated power supply.

•

Unless there are specific instructions to the contrary, set the
controls and switches as follows.

Contrast ............ normal
Brightness ........ normal

•

Carry out the following adjustments in this order:

3-1. Beam landing
3-2. Convergence
3-3. Focus
3-4. White balance

Note:Testing equipment required.

1. Color bar/pattern generator
2. Degausser
3. Vector scope

Preparation:
1. In order to reduce the influence of geomagnetism on the  set’s

picture tube face it in an easterly or westerly direction.

2. Switch on the set’s power and degauss with the degausser.

1. Input a crosshatch signal from the pattern generator.
2. Picture control is minimum and brightness control is still

normal.

3. Position the neck assy as shown in Fig. 3-2.
4. Move the deflection yoke forward to touch the CRT and it

stands up rightly.

5. Adjust the upper pin and the lower pin symmetrically by

opening or closing the Y-splitting axis correction magnets
on the neck assy.

6. Return the deflection yoke to its original position.

Note: Before carrying out the following adjustments adjust the

magnets as indicated below (See Fig.3-3).

1. Input an all-white signal from the pattern generator.

Maximize the picture setting and adjust the brightness setting.

2. Rough-adjust the focus and horizontal convergence.
3. Loosen the deflection yoke screws, align the purity adjustment

knob to the central position. (See Fig. 3-1)

4. Switch from the all-white pattern to an all-green pattern.
5. Move the deflection yoke backwards and adjust with the

purity magnet so that the green is at the center and it aligns
symmetrically. (See Fig. 3-4)

6. Move the deflection yoke forward and adjust so that entire

screen becomes green.

7. Switch the raster signal to red, then to blue and verify the

landing condition.

8. When the position of the deflection yoke has been

determined, fasten the deflection yoke with the screw.

9. If the beam does not land correctly in all the corners, use

magnets to correct it. (See Fig. 3-5)

Purity Adjustment

Fig.3-1

Neck assy

Align the bottom edge of the neck
assy with the G3 hole center.

Fig.3-2

Y-splitting axis correction magnet

Align Pips
on each
magnet

Fig.3-3

Deflection yoke

Purity